Lone Wolf Networks
7Dec/160

Cisco – Define default GW based on source

Posted by Jason Hower

Was recently working on a project for a client where the client needed to route traffic from a specific network over a T1 and send the rest of the traffic out the default gateway of the router.  In order to accomplish the task I configured policy based routing on the 2911 as follows:

interface GigabitEthernet0/0.4

encapsulation dot1q 4

ip address 10.2.1.1 255.255.255.0

ip policy route-map NoDSL

access-list 101 permit 10.2.1.0 0.0.0.255 any

route-map NoDSL 10

match ip address 101

set ip default next-hop 172.16.1.29 Read More

24Oct/160

Skype for Business 2015 – Mobility clients not able to find contacts

Posted by Jason Hower

I was recently asked to look in to a Skype for Business 2015 infrastructure due to reported 2013 mobility client issues.  The infrastructure consisted of a standard edition front end, edge server and KEMP load master reverse proxy.  The issue was that mobility clients could not search for contacts and could not see certain status messages.  All other features were working and users could chat/make calls.

Testing with https://www.testconnectivity.microsoft.com/ shows green across the board.  If you are dealing with this issue, start with this tool and run the following tests: Read More

5Mar/140

Back from the Dead – Virtualizing DOA Laptops

Posted by Jason Hower

Simple post on restoring dead laptops using virtualization.  Some people ask me: "Is there any way to bring a laptop back from the dead?" or "I dropped my laptop in the toilet and now it wont start! How do I get to my important stuff?".   The answer is not exactly simple, but it is effective in most cases.  If you need access to the OS for some reason prior to restoring data on a new system, it may be possible to restore the laptop and boot it as a VM.

First off, you need to remove the physical hard drive from the device.  You will want the primary (boot) disk.  You may also need the secondary hard drives if you installed critical apps in non-standard locations. Read More

10Jan/140

Cisco 7960G 3.x Firmware Upgrade Issues

Posted by Jason Hower

Working on a project to bring a batch of Cisco 7960G phones online with a newer 7.1 CUCM server.  The issue is that the phones were donated, and although new in the box they were using just about every firmware version from 3.x to 8.x, SCCP and SIP.  The newer revisions were simple enough to manually upgrade via TFTP, but the 3.x revisions absolutely would not upgrade. We tried upgrading from 3.x to 5.x, 7.x, etc with no luck.  We would have liked to upgrade them from 3.1 to a newer 3.x revision, but all of those files from Cisco are packaged in an exe intended for CME.  This limited our options.  Finally found an obscure way to get around the UAL conflicts. Read More

29Jun/130

Exchange 2013 ECP – :-( Something Went Wrong

Posted by Jason Hower

Fresh deployment of Exchange 2013.  As you try to connect to the management console https://localhost/ecp/ with a valid administrator account, it redirects to OWA and responds with ":-( Something Went Wrong, A problem occurred when trying to use your mailbox."

This seems to be related to left over Exchange attributes in Active Directory.  I tried everything from a multitude of TechNet articles including the following:

  1. Rebuilding the ECP front end and back end (Reference)
  2. Adding appropriate permissions to the administrator account
  3. Connecting directly to the back end by using port 444
  4. Messing with certificates (Reference)
  5. Many articles mentioned having CAS and MBX roles installed, but these were installed on the same machine at the same time
  6. Manually creating the administrator mailbox using the exchange shell

Finally I tried just creating another user account in AD and gave it permissions to manage Exchange by adding it to the group ADUC-->Domain.local-->Microsoft Exchange Security Groups-->Organization Management. Read More

28Jun/130

Exchange 2013 Schema Prep – ADC Found

Posted by Jason Hower

Installing a new Exchange 2013 deployment on an existing domain with questionable history.  The existing domain had untold number of previous Exchange deployments with remnants scattered throughout Active Directory.  After using ADSI edit to manually remove all instances of the old Exchange servers, running a schema prep runs in to an error about an existing Active Directory Connector.  Microsoft suggests (TechNet) disabling the ADC service on the running computer, then uninstalling the service using the exchange server installation CD.  In this situation of course the detected ADC was probably on a computer that was long ago trashed or removed. Read More

5Jun/130

Cisco Stackwise Port Flapping

Posted by Jason Hower

I recently was confronted with a stack of six Cisco 3750X switches that were experiencing intermittent outages.  The symptoms were random, but included switches being removed from the stack randomly, PoE drops, and full blown switch crashes with reloads.  If anyone has worked with Cisco stacks, you know how long it takes the entire stack to reload and elect a new master.

Troubleshooting the situation, I found that the switch stackwise ports were flapping.  All of them were reporting up/down notifications at random intervals. Read More

5Oct/120

Polycom RMX 2000 and Lync 2010

Posted by Jason Hower

Continuing from my previous post on integrating an existing Polycom system with Microsoft Lync 2010, I will run down the process for integrating a Polycom RMX bridge.  The process is much more difficult than integrating the Polycom endpoints as it requires creating a trusted application within the Lync server, running some shell commands, generating certificates and RMX configuration changes.  Once the integration is complete you can create SIP enabled meeting rooms accessible by Lync users and Polycom endpoints alike. Read More

28Sep/122

Polycom HDX 7/8000 and Lync 2010

Posted by Jason Hower

Recently I have been working on integrating an existing Polycom video conferencing system with a new Lync 2010 deployment.  As it turns out the newer software releases for Polycom have made great progress towards making the integration of Polycom systems with Lync easier.  I say easier, because it still isn't exactly easy.  There are many cool features of integrating Polycom and Lync.  By using a Polycom RMX, one can have continuous presence using the meeting room format.  This is something that was sadly left out of Lync 2010.  As most people who have used Lync 2010 will tell you, it doesn't do a very good job of switching between active speakers. Read More

26Jul/120

Cisco StackPower – Port Issues

Posted by Jason Hower

I have recently been battling with Cisco Stackpower issues and commands that have been difficult to find. In one environment the company uses 3750X series switches exclusivly in large stacks to avoid a spending cap on single items. Instead of buying blade switches we stack 24 port gig PoE 3750X switches. As an added benefit, with Stackpower we can make the switches redundant without buying additional power supplies. They will also distribute power if PoE devices are unevenly distributed to one switch or the other. Unfortunately when configuring Stackpower, not all ports are active at first, and sometimes the power sharing mode may be configured as something other than "sharing" by default. Read More

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